The framework of muscle and bone that moves and supports the human Machine. -- In the Muscular System segment, experts explain differences between voluntary, involuntary and cardiac muscles and their various functions. A physiologist explains the differences in the chemistry and functions of fast-twitch and slow-twitch muscle fibers. -- In the Skeletal System bones in each region of the body are examined in relation to their specific regions and to their contribution to the body as a whole. 30 min. |
